Warp stop-motion for looms



0. oseoon.

WARP STOP MOTION FOR {0QMS. APPLICATION man JULY :4. 1920.

Patented Jan. .25,

2 SHEETS-SHEE I). ()SGOOD.

' WARP STOP MOTION FOR LOOMS.

APPLICATION FILD JULY I4. I920.

A- orzz IIIIIIIII DANA OSGOOD,

TION,

ASSIGNOR TO DEA'PEQ CGR'PORA WAR? STOPMOTION FOR LOOIVIS.

Specification of Letters Eatent.

Patented Jan, 25, rear.

Application filed July 14:, 1920. Serial 3T0. 396,141.

To all :0 710m it may concern:

Be it known that I, DANA Osooon, a citizen of the United States, residing at Hopedale, in the county of Worcester and State of Massachusetts, have invented Improvements in W'arp Stop-Motions for Looms, ot which the following description, in conno'tion with the accompanying drawings, is a. specificat-ion, like characters on the drawings representing like parts.

This invention relates to warp stop motions for looms, and more particularly to improved means for finding the broken or abnormal warp thread.

Looms are now generally supplied with warp stop motions which comprises a series of warp detectors which are supported by the normally conditioned warp threads between the warp beam and shedding mechanism, and associated with the warp detectors is a train of mechanism which, when a detector is allowed to drop to an abnormal position either by a broken or abnormally slack warp thread, e'li'ects loom stoppage. t is then the duty of the weaver to find the abnormal warp thread and either tie the ends of the broken tt ead together, or correct the slackness thereof. There are usually a large number of threads which are spread out into sheet form, and very close together, so that much time is lost in finding the broken or abnormal warp thread and correcting the fault so that the loom may be started and perfect cloth be woven.

An important feature 01"". the present invention, therefore, consists of simple and effective means which may be manually operated by the weaver for readily detecting the position of tho broken or abnormally slack warp thread. Usually the dropped detector is engaged by a movable member of: the train of mechanism when the detector is dropped, and the movable member is brought to rest by the detector, thereby setting the train of mechanism into operation store the loom can be started again, the dropped detector must be thrown out of the path of movement of the movable member, and another important feature of the present invention. therefore, consists in a. kicker which, under manual control, may be actuated to kick or throw the dropped detector into an indicat position to indicate the location of the abnormal warp thread and simultaneously therewith, disengage it from the movable member of the train of mechanism.

The above and other "features of the invention will best be understood from the following description and accompanying drawings oi one good, practical form of the mvention, and then the novel features and combinations of parts will be defined by the claims. i

In the drawings Figure l is a sectional side elevation of a loom provided with a warp stop motion. of the present invention;

Fig. 2 is an enlarged detail showing the kicker and its connection with one good form of means for impulsively actuating the kicker; I

Fig. 3 is a sectional ing the warp detectors, the kicker, and sociated parts; and

Fig. 4 is an enlarged front elevation of the warp stop motionand associated parts, some of the elements being broken away.

The loom frame and the operating parts for eiiecting the usual weaving operation, may be as usual, and as indicated in Fig. 1. the loom frame 1 has mounted thereon the shedding mechanism which may be indicated as a whole at 2, and re rward of the shedding mechanism are the usual whip rolls 5') over which the warp threads pass it'rom the warp beam to the shedding mechanism. The lay 4, its actuating means 5 and the crank shaft 6 may be of usual construction.

Supported upon the loom frame between the shedding mechanism and whip rolls is the warp stop motion which comprises a series of warp detectors which are supported in normal raised position by intact and normal warp threads. When a warp thread breaks, however, the supported warp detector is permitted to drop and is then brought into a position to arrest a movable member of a train of mechanism and eiiect loom stoppage.

In thepresent instance of the invention, the loom frame has connected at each side thereof a support 7, one of which is indicated in Fig. i. The support 7 is sustained from the loom frame by any appropriate means, as for instance, the bracket 8 which may be secured to the support 7 at the upper portion thereof, but which may be otherwise side elevation showi movement. in the presefol; ll

17, the teei'zh or .recl rocsiiii 3 moy'remen'l he an aim? associated with the support to hold it in proper position between the shedding mechzinism and. the whip rolls. Extending between the suppoiis 7 are the rods 9 over which pass, in the present instance, the warp threads as. Extending between the supports 7, one at each side of loom, are the detector guides 10 which pass through elongated slots 11 formed'iii the warp detectors, and consequently guide the detectors in. their rising and fslling'movements,

The warp detectors and the means for 'i'esting the operation of the loom when a detector drops, may be variously constructed and formed, but in the present instance of. the inveniion, and as showing? one good practical form of warp detectors and stopping mechanism, the warp detectors are each formed of thin metal, in addition to the guiding slots 11 in the upper poi-lion thereof, each detector has lower slotted portion 12 and preferably 2- cl sod lower end 13. In the slotted port-ions ii? of the detectors are the toothed d .eceoi slides, one of which in each of the silo-is, ech and the other of which is giveii. a reciprocating Q86 the fixed transbe at l member of the slides cons verselyexleriding' bar 14; w. cured to the supports as moi Fig. Eech'oi the fixed slides 14- is provided with series .The or slides z 1 h provided with a central guide-way in which is inoun eel for reciprocation Elie ioothed bar slide which only extend soiiiewhciabove the teeth of the bars The cipro cslzing tooi'zhed 17 are given their 18 llkV and pin coriioecti .1 19 with the i8 sctu'algetl from ed to a rod or 1' ing a slol; bars 17, and the another arm. 20 conhe 21, the construction the them, he 7 effect loom stoppage. f

ping the loom thro i a 01' one of the toolhod T. Well known in the srl', and since ii for no special pore; of the present invenlsion, is not deemed necessary at this iimeto illustrate and describe the some in detail. I

All of the pelvis thus described may be of usual construction and may operahe in the usual manner to shop she loom when one of the Warp detectors is permitted to drop by the associated warp thread, either by breolo age thereof or by its becoming too slack for perfect Weaving purposes.

The two supports 7, one at each side of the loom, as hereinbefore described, are 6X7 tended downward below the lower ends or" the warp detectoic indicated in Figs. 1,

4:: in which is guided ,ing wall of the guide-ways for vertical movement. the kicker 23. The

kicker 23 extends between the two supports 7 below the lower ends of the Warp detecmovement upwardly by a stop Q l which 1m] y be conveniently formed as the upper limi 22. Pivotally connected to the kicker 23 a; 25 is the yoke 26, the converging end portions of which are united by a bolt 2'? and connected by a link 28' will: the arm of a m:muullyoperal;ing means which in the present instance of the invention, consists of a, needle pivotally moonbed all an i having a foot-piece 3i convenieiitly positioned for actuation by the weaver.

hen the warp threads are normal, that is, when they are intact and duly under tensiom the warp (:leteciors will held in their raised or normal posisioii, as indicated in Figs. 1 and 8; but should a warp thread break or become mduly'slzicli or abnormal the suspended warp delecior will drop (as indiccied by dolled lines in 3) unfiil rile 3" wall 31 of the slot 12 El. ei'eof will enbet-Ween the teeth ehc relatively fixed e ector slides 14: and 17', movable slide "will be arrest loom stoppage as usual in this i motions, and the dropped will renia-in pin led beziwcen the the rela'ive y fixed and movable then duty of the weaver abnormal warp thread which lo the present. ereupon manually which has the slice: of J upward dropped detector from its lOWG-EQG posit-ion, as ll'ltlb 'eleil 3, and causing; it to slide above noritually/sospended Warp detectors. Owing so the limiting stop 2% which limits the kicking movement of the kicker, the normally positioned walrp detectors T"0- main undisturbed. of the liiic =o (lei tecior i om between the is bears and unlocks "them so filial: when the end of the lJlOliIGYfWiil'P ieced or the undue slaclmcss is taken up, "he loom is r mly to start into operation. I

in the present embodiment of the invezr tion, the warp deteciors are shown as of pariicular type which is found to be well suiaed "for purposes of she present invens the, dropped (le- 1th of the toothed H be lion but it is to be understood that the in volition is not; limited in this respect, because the warp detectors may be" variously formed "she essentials being that when a warp detee-tor shall. have been dropped to its lowered position by a, warp thread, the kicker may be manually operated to throw the detector upwardly or into an indicating position enable the weaver so readily locate and piece or up ihe slack of the abnoh oosen"! mal warp thread, and simultaneously therewith, to uulo-rk the dropped detector from its stopping position.

What is claimed is 1. In a warp stop motion for looms, the combination or a series of Warp detectors adapted to be supported by warp tlireadm means for stopping the loom when a warp thread breaks or becmnen too slack, a kicker, and manually operated means for causing the kicker to i a dropped detector rip-- 'wardly beyond the normal: position of the detectors and locate the abnormal warp thread.

2. In a Warp stop motion for looms, the, combination of a series oilf Warp detecti'irs adapted to be supported by normai Warp threads, means for stopping the loom when an abnormal condition occurs in a warp thread and a detector is permitted to drop a kicker positioned below the series of warp. detectors, and means for manually operating the kicker to irnpuleiy y lift or throw the drop detector above the normal position. of the warp detectors and locate the abnor nial warp tl'iread.

3. In a Warp stop motion for looms, the combination of a series of Warp detectore, a kicker, and manual means for operat' jig the kicker to throw a dropped detector upwardly in the vertical plane in which it is normally suspended,

4. In a Warp stop motion for looms, the combination of a of Warp detectors, toothed detector slides adapted to be engaged "by a dropped detector to stop the 100111, and a manually operated kicker For disengaging the dropped detector from the toothed glides and locating the abnormal warp thread.

5. In a warp Stop motion for looms, the combination of 21, series of vwarp detectors, relatively movable toothed detector slides adapted to be engaged and locked from relative movement by a dropped detector to stop the loom, a kicker, and manually controlled means for operating the kicker to unlock the toothed slides and by upward movement of the dropped detector to locate the abnormal warp thread.

6. In a Warp stop motion for looms, the

normal Warn thre cl I. in a warp stop motion for looms, the combination .eries o1 warp detectors, relalvi i'aiiie lootlied slid; Lhipted to be loci ironi relative mourn-ent by a droppc etecior to stop the loo i, a kicker, and n'mnnzilly rolled mean r operating the kicker to t row the dropped detector into an indicating position and to unlock the toothed slides, and. a top for liniitin, the woven nit of the iriclrer to prevent disturl ance of the andropped detectors.

8. in a 'arp stop motion for looms, the oination of a plui 't of rows of warp detectors adaited to beRupported by norn'ial wa'p'tlnc a kicker extending transversely or the loom and arranged to kick a dropped detector in. any of the rows to throw the dri'ippoiil detector upwardly and thereby locate the abnormal Warp thread,

- and lllfiilllh i'or operating theliiclier.

5). ln a Warp etop motion for looms, the (IOIIlblllltllllEll oi. two rows of warp detectors adapted to be supl'iorted by normal Warp threads, a liiclaer extending transversely of the loonrand arranged to impulsively throw a dropped detector in either row upvardly to indicate the position of the abnormal Warp thread, and nieai'ne for operating the kicker.

ll). in a warp stop motion for looms, the combination of a of Warp detectors adapted to besupported by normal warp threads, a kicker extending transversely of the loon'i and arranged to kick a dropped detector np'u'ardiy to indicate the position of the abnormal warp threads, and a foot treadle for operating the kicker.

ma i osooon. 

